When is the discharge of storm water trapped in a containment area to surface water permitted?

Discharging storm water from a containment area to surface water is permitted only when there is specific authorization outlined in the permit. This ensures that the discharge complies with environmental regulations designed to protect water quality and aquatic ecosystems.

The permitting process typically includes strict criteria under which discharge can occur, often requiring monitoring and compliance with state and federal water quality standards. Such permits may mandate that certain conditions or thresholds be met before any discharge can take place, making it essential for operators to adhere to these guidelines.

In contrast, the other options suggest either unrestricted discharge or discharge based on time constraints, which can lead to potential violations of environmental laws. It's important that permit holders understand that the management of storm water discharges requires careful attention to compliance with the specific terms of their permits to ensure protection of public waters and ecosystems.